Credit

Caption

Whole Earth, topographical satellite image. Here, Africa is seen at centre. The land is mostly covered by vegetation and seen as the green areas. The world's deserts are yellow and orange, and mountain ranges are grey raised features. The Arctic and Antarctic are white. The world's oceans range from light blue (shallow coastal water) to dark blue (deep water). Image obtained using data from Landsat 5 and Landsat 7 satellites.